After a long trial of about three months Google+ now open to the Internet public -- and expanded its "Hangouts" video-chat feature to allow mobile use and broadcasting. Google+ opens to all

Hangouts feature -- where up to nine people can link up and chat with a user on video -- will be available on camera equipped smartphones powered by its own Android software. Company added that support for Apple Inc iOS devices is coming soon.

User can now host an online broadcast with this feature -- recording a session and broadcasting it live for public access online. "Hangouts should keep pace with how you socialize in the real-world, so today we're launching it on the one device that's always by your side: your mobile phone," senior vice president of engineering Vic Gundotra said on the blog post.

Analysts estimate upward of 25 million users have joined Google+ since its inception.

The company also made its search engine available from within the social network. Users can search from Google+ and get results not just on the network, but from the
worldwide Internet.